Extinction coefficient of Ni2+ in (TeO2)0.78(WO3)0.22 glass

• DOI: 10.1134/s0020168510080212
• Publication Date: 2010-09-07T14:14:18Z
• Authors: G. E. Snopatin; V. G. Plotnichenko; S. A. Volkov; V. V. Dorofeev; E. M. Dianov; M. F. Churbanov
• Keywords: Molar absorptivity; Extinction (optical mineralogy); Non-blocking I/O

The absorption spectra of (TeO2)0.78(WO3)0.22 glasses containing 0.01–1.0 wt % NiO have been measured at wavelengths from 450 to 2700 nm, and the spectral dependence of the extinction coefficient of Ni2+ in the glasses has been obtained. In the absorption bands centered at 810 and 1320 nm, the extinction coefficient is 20.2 ± 0.8 cm−1 (870 ± 35 dB/(km ppmw)). According to the spectral range of its absorption and its extinction coefficient, nickel is a strongly absorbing impurity in tellurite glasses. The present results can be used to formulate sound nickel concentration limits in tellurite glasses for fiber-optic applications.